Cosmic ray contributions to dose rates for luminescence and ESR dating: Large depths and long-term time variations

Prescott, J.R.; Hutton, J.T.

doi:10.1016/1350-4487(94)90086-8

Cited by 3,169 publications

(1,615 citation statements)

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“…The selection of the average water content for age calculation was based on the depth and location of the sample relative to the expected groundwater level. The environmental dose rate was determined by gamma spectrometry (Murray et al, 1987) and by calculating the contribution from cosmic radiation according to Prescott and Hutton (1994). OSL measurements were done on large (8 mm) and small (2 mm) aliquots of 180-250 µm quartz grains with Risø TL/OSL readers equipped with 90 Sr/ 90 Y beta radiation sources (dose rate 0.10-0.33 Gy/s), blue (470 ± 30 nm; ~50 mW/cm 2 ) light sources, and detection was through a 7 mm U340 glass filter.…”

Section: Luminescence Datingmentioning

confidence: 99%

Holocene Chronology of the Brattforsheden Delta and Inland Dune Field, Sw Sweden

Alexanderson

Fabel

2015

Geochronometria

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Abstract:Brattforsheden is a large glacifluvial deposit in southwestern Sweden and associated with it is one of Sweden's largest inland dune fields. Although the relative ages of the Brattforsheden deposits are well known, absolute ages from the area are few. In this study we have used optically stimulated luminescence (OSL), surface exposure ( 10 Be) and radiocarbon ( 14 C) dating to provide an absolute chronology for the deglaciation and for the Holocene development of the aeolian dunes. Our data show that the deglaciation took place just before 11 ka (11.5 ± 0.6 ka OSL, 11.3 ± 0.8 ka 10 Be), in line with the 14 C-based regional deglaciation age. Aeolian dunes started forming immediately after deglaciation and were active for at least 2000 years, well after vegetation had established. Renewed aeolian activity occurred 270-180 years ago, resulting in the deposition of sand sheets. Comparison between dating methods and studies of OSL dose distributions show that glacial, glacifluvial and littoral sediments suffer from incomplete bleaching and thus that mean OSL ages from such deposits overestimate the true depositional age. By using small aliquots and statistical age models, this effect can partly be countered. Also, some of the 10 Be ages appear too old, which may be due to previous exposure.

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Section: Luminescence Datingmentioning

confidence: 99%

Holocene Chronology of the Brattforsheden Delta and Inland Dune Field, Sw Sweden

Alexanderson

Fabel

2015

Geochronometria

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“…Water contents of the loess and fluvial sand samples were estimated to be 10 ± 2% and 5 ± 4% respectively, based on the field-measurement results. Cosmic-ray dose rate was calculated following Prescott and Hutton (1994).…”

Section: Appendix C: Details Of the Samples And Summary Of Dosimetrymentioning

confidence: 99%

Optical dating of aeolian and fluvial sediments in north Tian Shan range, China: Luminescence characteristics and methodological aspects

2015

Quaternary Geochronology

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. (2015). Optical dating of aeolian and fluvial sediments in north Tian Shan range, China: luminescence characteristics and methodological aspects. Quaternary Geochronology, 30 (Part B), 161-167. Optical dating of aeolian and fluvial sediments in north Tian Shan range, China: luminescence characteristics and methodological aspects AbstractLoess and fluvial sand are important materials for dating river terraces and alluvial fans. This study focuses on the methodological aspects of dating loess and fluvial deposits from the northern flank of the Tian Shan range, China, using sand-sized quartz and potassium (K) feldspar. Luminescence characteristics of quartz and Kfeldspar were studied for searching suitable dating procedures. Our results indicate that 1) most quartz aliquots were contaminated by feldspar, and were dated using a post-infrared optically stimulated luminescence (post-IR OSL) procedure. A Fast ratio acceptance threshold of 15 can be applied to select these aliquots with post-IR OSL signals dominated by quartz OSL; 2) the multi-elevated-temperature post-IR IR stimulated luminescence (MET-pIRIR) procedures are applicable for K-feldspar. A test dose of ∼30% of the natural dose is appropriate for dating of older (>10 ka) samples. An Age (T, t) plateau test can be used to evaluate the dating results; 3) for the loess samples, both quartz and K-feldspar were well bleached and are suitable for dating. Dating using K-feldspar is preferred for its higher efficiency; 4) for the fluvial sand samples, only the quartz grains were fully bleached. Single-aliquot dating of quartz gives reliable ages. 3) for the loess samples, both quartz and K-feldspar were well bleached and are suitable for dating. Dating using K-feldspar is preferred for its higher efficiency; 4) for the fluvial sand samples, only the quartz grains were fully bleached. Single-aliquot dating of quartz gives reliable ages.

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“…8). Prescott and Hutton (1994), conversion factors of Guerin et al (2011), beta attenuation factors of Brennan (2003); internal K-content of 12.5 ± 0.5% (Huntley and Baril, 1997) 1.8 Q 9 47/61 2.80 ± 0.14 9.97 ± 0.63 1.33 ± 0.05 2.72 ± 0.32 13 ± 0.6 17 57.9 ± 3.1 21.3 ± 2.1 C-L2897 2.3 Q 9 48/61 2.85 ± 0.15 9.78 ± 0.57 1.36 ± 0.05 2.75 ± 0.32 10 ± 0.4 12 63.1 ± 3.3 23.0 ± 2.3 C-L2924 5.7 Q 11 32/42 2.55 ± 0.13 9.11 ± 0.53 1.39 ± 0.05 2.63 ± 0.30 20 ± 1.1 22 50.3 ± 3.1 19.1 ± 2.0 C-L2925 7.4 Q 11 41/60 2.80 ± 0.14 9.61 ± 0.55 1.37 ± 0.05 2.69 ± 0.28 28 ± 1.7 32 60.8 ± 4.1 22.6 ± 2.4 C-L2898 8.6 Q 15 35/69 2.64 ± 0.14 9.02 ± 0.53 1.37 ± 0.05 2.57 ± 0.32 26 ± 1.6 27 70.4 ± 4.7 27.3 ± 2.9 C-L2899 12.3 Q 14 37/61 2.49 ± 0.13 8.42 ± 0.49 1.22 ± 0.05 2.29 ± 0.27 38 ± 2.7 41 70.9 ± 5.7 30.9 ± 3.6 C-L2899 12.3 KF 14 25/26 2.49 ± 0.13 8.42 ± 0.49 1.22 ± 0.05 2.51 ± 0.30 25 ± 1.7 29 140.8 ± 9.9 56.0 ± 3.9 C-L2900 15.7 Q 18 36/60 2.63 ± 0.14 9.97 ± 0.58 1.52 ± 0.06 2.73 ± 0.29 30 ± 2.1 31 91.3 ± 6.6 33.4 ± 3.6 C-L2900 15.7 KF 18 28/28 2.63 ± 0.14 9.97 ± 0.58 1.52 ± 0.06 2.79 ± 0.31 20 ± 1.2 27 153.9 ± 9.7 55.2 ± 3.5 C-L2900 15.7 KF 18 23/28 2.63 ± 0.14 9.97 ± 0.58 1.52 ± 0.06 2.79 ± 0.31 13 ± 0.8 14 144.8 ± 8.3 51.9 ± 3.0* C-L2929 18.5 Q 20 38/53 2.65 ± 0.13 9.13 ± 0.52 1.39 ± 0.05 2.56 ± 0.27 22 ± 1.4 26 159.6 ± 10.1 62.4 ± 6.5 C-L2930 20.8 Q 17 33/54 2.87 ± 0.14 10.92 ± 0.62 1.84 ± 0.07 2.96 ± 0.35 41 ± 3.4 42 201.3 ± 18.0 67.9 ± 8.0…”

Section: (A) (B)mentioning

confidence: 99%

“…For K-feldspars, an internal potassium content of 12.5 ± 0.5% (Huntley and Baril, 1997) was assumed. The cosmic dose rate was calculated after Prescott and Hutton (1994).…”

Section: Luminescence Datingmentioning

confidence: 99%

Luminescence dating of loess deposits from the Remagen-Schwalbenberg site, Western Germany

et al. 2015

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This study describes the luminescence characteristics of quartz of Upper Pleistocene loess of the Middle Rhine area. The loess/palaeosol sequence of the Schwalbenberg near Remagen comprises a multitude of interstadial soils and soil sediments that have been dedicated to the Marine Isotope Stage 3 (MIS 3). These weak calcaric cambisols and their derivates are underlain by loess and soil sediments of MIS 4 to MIS 5 and covered by loess sediments and intercalated gelic gleysols of MIS 2. We applied luminescence dating of quartz and feldspar of drill core samples and observed an age discrepancy within both data sets. The quartz ages were clearly younger than the feldspar ages, because of thermally unstable signal components of the quartz luminescence signal. Therefore, we regarded the quartz samples of the lower parts of the drill core as unsuitable for luminescence dating. This underestimation did not affect the quartz samples of the upper part of the drill core which was indicated by age control that was provided by the Eltville tephra layer. Geochemical analysis based on X-ray fluorescence showed that the sediments in the upper part and the lower part of the drill core have different geogenic finger prints most likely due to changing source areas of dust and sediment allocation. We assumed that these different facies types were the reason for the luminescence behavior of the quartz samples.

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Cosmic ray contributions to dose rates for luminescence and ESR dating: Large depths and long-term time variations

Cited by 3,169 publications

References 7 publications

Holocene Chronology of the Brattforsheden Delta and Inland Dune Field, Sw Sweden

Holocene Chronology of the Brattforsheden Delta and Inland Dune Field, Sw Sweden

Optical dating of aeolian and fluvial sediments in north Tian Shan range, China: Luminescence characteristics and methodological aspects

Luminescence dating of loess deposits from the Remagen-Schwalbenberg site, Western Germany

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